This is going to drive the netroots wild.

Connecticut Sen. Joe Lieberman, the Democratic Party's vice presidential candidate in 2000 and now an independent who is one of John McCain's strongest supporters, will speak at the Republican National Convention, an official said.

Lieberman will deliver a speech when Republicans gather in St. Paul, Minn., to nominate McCain for president, a party official told The Associated Press on Wednesday. The official requested anonymity because a formal announcement had yet to be made.

Lieberman might as well announce on Monday night he's going to start caucusing with the Republicans, because there will more pressure than ever from left wing activists to strip him of his committee assignments.